CVE-2018-13100: Divide by Zero
First published: Tue Jul 03 2018(Updated: )
An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3, which does not properly validate secs_per_zone in a corrupted f2fs image, as demonstrated by a divide-by-zero error.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=4.17.3 | |
| Debian Linux | =8.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2018-10/msg00033.html
- http://packetstormsecurity.com/files/151420/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- http://www.securityfocus.com/bid/104679
- https://bugzilla.kernel.org/show_bug.cgi?id=200183
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42bf546c1fe3f3654bdf914e977acbc2b80a5be5
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://seclists.org/bugtraq/2019/Jan/52
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4118-1/
- https://launchpad.net/bugs/cve/CVE-2018-13100
- https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?h=f2fs-dev&id=977f9bb558cb4a95d53b10301f5c739ed8867d4d
- https://security-tracker.debian.org/tracker/CVE-2018-13100
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-13100
- https://nvd.nist.gov/vuln/detail/CVE-2018-13100
- https://ubuntu.com/security/CVE-2018-13100
Frequently Asked Questions
What is the severity of CVE-2018-13100?
CVE-2018-13100 has a medium severity rating due to its potential to cause a divide-by-zero error affecting system stability.
How do I fix CVE-2018-13100?
To fix CVE-2018-13100, upgrade to Linux kernel versions 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.10-1, or 6.12.11-1.
Which versions of the Linux kernel are affected by CVE-2018-13100?
CVE-2018-13100 affects the Linux kernel versions up to and including 4.17.3.
Is Debian Linux 8.0 affected by CVE-2018-13100?
Yes, Debian Linux 8.0 is affected by CVE-2018-13100 due to its use of an affected Linux kernel version.
What types of systems are vulnerable to CVE-2018-13100?
Systems running the Linux kernel version 4.17.3 or earlier, including certain distributions like Debian Linux 8.0, are vulnerable to CVE-2018-13100.
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